ZIP 33037 vs ZIP 33042

33037 is one of 9 ZIP codes that lie mostly in Monroe County, FL.

Shaded by typical home value, it ranks 2 of the 9 with a value.

1 school location in 33037: 1 middle.

In alphabetical order: KEY LARGO SCHOOL. Locations only — no ratings are shown here.

33042 is one of 9 ZIP codes that lie mostly in Monroe County, FL.

Shaded by typical home value, it ranks 3 of the 9 with a value.

1 school location in 33042: 1 middle.

In alphabetical order: SUGARLOAF SCHOOL. Locations only — no ratings are shown here.

In February 2016 the typical home in 33037 was worth $517,691.

Values peaked at $1,117,244 in June 2024. The latest reading is −1.9% from that peak.

As of August 2026: $1,096,047, +3.5% over twelve months.

Start with the typical home: $1,096,047. Put 20% down and borrow $876,838 at 7.40%, the 30-year fixed average as of October 8, 2026.

That is $6,071 a month in principal and interest.

The median household here earns $80,911 a year, $6,743 a month. So the payment takes 90.0% of income — rated “severe” (Lotvox ZIP bands: under 28% affordable · 28–36% stretched · 36%+ severe).

The line holds today's rate fixed and moves only the price: at that rate, the same share was 42.5% in 2016.

Take the typical home's price each month, borrow 80% at that month's actual 30-year average rate: in February 2016 (3.66%) the payment was $1,897.

In December 2020, with rates at 2.68%, it was $2,215.

By August 2026, at 6.67%, it was $5,639 — +155% since December 2020, while the home's value moved +60%.

Reported values rose +112% since February 2016.

General prices (CPI-U) rose +41% over the same span.

Divide one by the other: in August 2026 dollars, the 2016 home was worth $728,826. So the real change is +50%, not +112%.

33037: +112% since February 2016.

Monroe County: +93% since February 2016.

Florida: +93% since February 2016 — 33037 ran ahead of it by 19 points.

Against 1,098 Florida ZIP codes, 33037 sits at the 0th percentile for affordability (price vs local income).

93rd for appreciation (recent value growth); 4th for rental yield (rent vs price).

Owning the typical home costs about $7,167 a month once taxes and insurance (estimated at 1.2% of price a year) are added. Renting runs about $3,304 a month.

Price divided by a year's rent: 27.6. Lotvox reads under 15 as favoring buying and 20 or more as favoring renting.

In February 2016 the typical home in 33042 was worth $510,342.

Values peaked at $1,080,556 in May 2024. The latest reading is −4.8% from that peak.

As of August 2026: $1,028,593, +2.1% over twelve months.

Start with the typical home: $1,028,593. Put 20% down and borrow $822,874 at 7.40%, the 30-year fixed average as of October 8, 2026.

That is $5,697 a month in principal and interest.

The median household here earns $101,625 a year, $8,469 a month. So the payment takes 67.3% of income — rated “severe” (Lotvox ZIP bands: under 28% affordable · 28–36% stretched · 36%+ severe).

The line holds today's rate fixed and moves only the price: at that rate, the same share was 33.4% in 2016.

Take the typical home's price each month, borrow 80% at that month's actual 30-year average rate: in February 2016 (3.66%) the payment was $1,870.

In December 2020, with rates at 2.68%, it was $2,165.

By August 2026, at 6.67%, it was $5,292 — +144% since December 2020, while the home's value moved +54%.

Reported values rose +102% since February 2016.

General prices (CPI-U) rose +41% over the same span.

Divide one by the other: in August 2026 dollars, the 2016 home was worth $718,480. So the real change is +43%, not +102%.

33042: +102% since February 2016.

Monroe County: +93% since February 2016.

Florida: +93% since February 2016 — 33042 ran ahead of it by 9 points.

Against 1,098 Florida ZIP codes, 33042 sits at the 0th percentile for affordability (price vs local income).

88th for appreciation (recent value growth); 56th for rental yield (rent vs price).

Owning the typical home costs about $6,726 a month once taxes and insurance (estimated at 1.2% of price a year) are added. Renting runs about $5,050 a month.

Price divided by a year's rent: 17.0. Lotvox reads under 15 as favoring buying and 20 or more as favoring renting.

Picture the Listings Flow Ladder as a basin: new listings pour in from the faucet, the homes for sale are the water, and closed sales run out the drain. Coming in — new listings: about 30 a month (Redfin, 3-month rolling data through August 2026). That is 99% of the 2015–2019 level for the same months.

On the shelf — homes for sale at the end of the period: 177. That is 86% of the 2015–2019 level for the same months.

Going out — closed sales: about 28 a month. That is 92% of the 2015–2019 level for the same months.

The ladder: homes for sale ÷ monthly sales = 6.2 months of supply — above the 4–6 month balanced range. In the basin, that is the water level against the shaded balanced band.

The net reading: about 2 more homes came on than sold each month, so inventory is growing. The basin is filling.

Homes sold: about 28 a month in August 2026 (Redfin).

The 2015–2019 level for the same month was 25 — so sales ran at 112% of it, and below it in 18 of the last 24 months.

Across Monroe County, builders pulled permits for 279 new homes in 2025.

Of those, 86% were in 1-unit buildings (the Census Bureau's category for detached and attached single homes).

Picture the Listings Flow Ladder as a basin: new listings pour in from the faucet, the homes for sale are the water, and closed sales run out the drain. Coming in — new listings: about 20 a month (Redfin, 3-month rolling data through August 2026).

On the shelf — homes for sale at the end of the period: 108.

Going out — closed sales: about 21 a month. The drain is drawn 4% narrower: the share of homes for sale that sell each month is 96% of its 2015–2019 level.

The ladder: homes for sale ÷ monthly sales = 5.2 months of supply — inside the 4–6 month balanced range. In the basin, that is the water level against the shaded balanced band.

The net reading: about 0 more homes sold than came on each month, so inventory is shrinking. The basin is draining.

Homes sold: about 21 a month in August 2026 (Redfin).

The 2015–2019 level for the same month was 18 — so sales ran at 117% of it, and below it in 17 of the last 24 months.

Across Monroe County, builders pulled permits for 279 new homes in 2025.

Of those, 86% were in 1-unit buildings (the Census Bureau's category for detached and attached single homes).

This ZIP sits in Monroe County. IRS tax returns for 2022-2023: among the ten counties sending the most households, 994 moved in. Among the ten receiving the most, 1,064 moved out.

Net across those counties: −70 households. Beside it, homes for sale in this ZIP: 177 in June 2026.

Most arrivals came from Miami-Dade, FL (423 households); most departures went to Miami-Dade, FL (337).

County assessor records list 53 properties with a market value here. Their average assessed market value is $995,000; the typical home value is $1,096,047.

The assessor average sits −9.2% from the market figure — an average against a typical value, so treat it as a check, not a verdict.

This ZIP sits in Monroe County. IRS tax returns for 2022-2023: among the ten counties sending the most households, 994 moved in. Among the ten receiving the most, 1,064 moved out.

Net across those counties: −70 households. Beside it, homes for sale in this ZIP: 108 in June 2026.

Most arrivals came from Miami-Dade, FL (423 households); most departures went to Miami-Dade, FL (337).